UNDERNEWS

Undernews is the online report of the Progressive Review, edited by Sam Smith, who has covered Washington during all or part of one quarter of America's presidencies and edited alternative journals since 1964. The Review has been on the web since 1995. See main page for full contents

May 27, 2009

THINGS WE DIDN'T KNOW

NY Times - "Pre-rinsing dishes is a big mistake," said John Dries, a mechanical engineer and the owner of Dries Engineering, an appliance design consulting company in Louisville, Ky. "People assume that the dishwasher will perform better if you put in cleaner dishes, and that's not true. Just scrape. Pre-rinsing with hot water is double bad, because you're pumping water and electricity down the drain."

It's actually triple bad, according to Mike Edwards, a senior dishwasher design engineer at BSH Home Appliances in New Bern, N.C. "Dishwasher detergent aggressively goes after food," Mr. Edwards said, "and if you don't have food soil in the unit, it attacks the glasses, and they get cloudy," a process known as etching that can cause permanent damage.

It's also important not to use too much detergent, he said.

How much do you need? That depends on how much food soil there is, he said, not how many dishes. "If you have a light load," he said, "don't fill the detergent cup all the way."

Powder detergent is preferable to that in liquid or tablet form, he said, because it leaves dishes cleaner. But store it somewhere dry, not under the sink, where it can absorb moisture and form clumps. . .

Mr. Dries offered a final tip: stick with the normal cycle. It's the one consumer organizations conduct all their performance and energy tests on. "Manufacturers know this, so it's the cycle that the most work went into," he said.

1 Comments:

Anonymous Mairead said...

Or, wash dishes by hand using a less-powerful detergent and less-heated water.

May 28, 2009 4:51 AM  

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